#include <stdio.h>

int main(void)
{
  unsigned width,precision;
  int number=256;
  double weight=242.5;

  printf("What field width?\n");
  scanf("%d",&width);

  printf("The number is :%*d: \n", width,number);
  printf("Now enter a width and a precision: \n");
  scanf("%d %d",&width,&precision);
  printf("Weight = %*.*f\n",width,precision,weight);
  return 0;
}